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for APRIL, 1941 193 Here is the way it would appear if,you could old %2' or 44" thick bakelite gear and fit it to look through the boiler from the side: Illl-Ar 1 i, ....•.1 -1Now you'll need a small flat can made of brass •i, '/' 1/, E-C your axle, then turn it down so that it will clear everything, and lay out four quarter marks on the rim. Drill straight down to the hub with a 7..) Fiber block Phosphor 0(0% bronze TE, with some brass buck shot in it. Iron balls are No. 50 drill, and tap 2-56. Put in four 2-56 useless because the magnetic field created screws and be certain they are grounded on the around the coil when charged would attract the metal hub. The heads can stick out any distance can, and it wouldn't raise up when the armature so long as they will safely clear the valve motion -,•ring hit its under frame. Now fasten an insulated flat spring side. The balls bronze piece to the frame. would also be held down SO they wouldn't After you have done this, wlre it up. First, get a condenser out of an old radio and set it in rattle in the can, and it is the rattling which To power 6 simulates the exhaust sound. The can should be made as shown, with enough brass balls to [56ii;l#K,n ••42•-'_ •, nearly cover the bottom. They should be about , half the size of buck shot or BB. The hatched r guides keep it in position and slide on the frame. To loco framel•11 1_ser -K Two light springs are placed between the frame and these lugs to make for faster return action of the can, and at high train speeds fast action is needed. The armature will have to drop down out of the bottom of the coil at least half of its length on each stroke, in order to give the can a good sock and make more noise at the start. When the speed of the engine picks up the armature does not get a chance to fall all the wa9 down and consequently gives a lighter blow and less noise. To drop the required distance, a hole of sum- cient size is cut in the bottom of the smoke box right under the stack, and if you have a solid cylinder block you will have to drill a hole in it too. A thin rubber pad should be placed in the hole to mume the sound of the armature when it hits bottom. You want noise, but not too many noises. Make a rigging to get power to the unit at the rate of four contacts to each revolution of the Metal A- Quartering hub 1.@ il marks -C.ADrill, tap 2-56 drivers. The front main axle will be the best to r •den- I v 1 Can L.--2•\ 1 -2\0 l_J - -*- Screws grounded . to axle the tender. This is to keep the contacts from arcing and burning. You can't go far without the condenser, so don't try to get along without one. d 4 ....."'---W."I 1• /.. 1 r. / 4. . ../..Iiah.•..•..•liial- '; r.-I.,6/,-6.#*1..&..tiefir,2,0/id"lill'L. •-*I WAIR.mi.e*T'&'r /4...'*410421042•036....". .j ·· :042Fil< miery,r·-0 v COALING STATION -This well detailed colliery is the work of Ralph J. Gibbons, Route 2, Box 100, use for this purpose. If you are building a new Troutdale, Ore., whose avocation of model railroading engine and haven't got the wheel pressed on yet, is a bit more earthly. than His vocation; he's an air lines you are lucky; all you'll have to do is to take an pilot. The Consolidati• is als6 from the Gibbons shops. ., rn, 1